kotlin-native/runtime/src/mm/cpp/GlobalData.hpp

/*
 * Copyright 2010-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
 * that can be found in the LICENSE file.
 */

#ifndef RUNTIME_MM_GLOBAL_DATA_H
#define RUNTIME_MM_GLOBAL_DATA_H

#include "Allocator.hpp"
#include "AppStateTracking.hpp"
#include "GC.hpp"
#include "GCScheduler.hpp"
#include "GlobalsRegistry.hpp"
#include "ManuallyScoped.hpp"
#include "SpecialRefRegistry.hpp"
#include "ThreadRegistry.hpp"
#include "Utils.hpp"

namespace kotlin {
namespace mm {

// Global (de)initialization is undefined in C++. Use single global singleton to define it for simplicity.
class GlobalData : private Pinned {
public:
    static GlobalData& Instance() noexcept;

    // init() can only be called once.
    static void init() noexcept;
    static void waitInitialized() noexcept;

    ThreadRegistry& threadRegistry() noexcept { return threadRegistry_; }
    GlobalsRegistry& globalsRegistry() noexcept { return globalsRegistry_; }
    SpecialRefRegistry& specialRefRegistry() noexcept { return specialRefRegistry_; }
    gcScheduler::GCScheduler& gcScheduler() noexcept { return gcScheduler_; }
    alloc::Allocator& allocator() noexcept { return allocator_; }
    gc::GC& gc() noexcept { return gc_; }
    AppStateTracking& appStateTracking() noexcept { return appStateTracking_; }

private:
    friend class ManuallyScoped<GlobalData>;

    GlobalData() noexcept;
    ~GlobalData() = delete;

    ThreadRegistry threadRegistry_;
    AppStateTracking appStateTracking_;
    GlobalsRegistry globalsRegistry_;
    SpecialRefRegistry specialRefRegistry_;
    gcScheduler::GCScheduler gcScheduler_;
    alloc::Allocator allocator_;
    gc::GC gc_{allocator_, gcScheduler_};
};

} // namespace mm
} // namespace kotlin

#endif // RUNTIME_MM_GLOBAL_DATA_H